Fallen, it is what they call the Angels that descend to Earth to protect their Humans. And for that to happen, they have to give up their wings to look like a normal human. Throughout the years, all Angels abide by that law and nothing seems to be out of sort, until something or rather, someone had suddenly appeared. Someone with black wings, someone evil. Someone who had enough hatred to finish off the Angels. And now, it is coming for them.